Pure water cooling system and device

Abstract

The utility model discloses a pure water cooling system and device.The pure water cooling system comprises a water pump assembly, a water supply pipeline, a water return pipeline, a refrigerating unit, an air cooler, a deionization branch and a pressure stabilizing assembly, the output end of the water pump assembly is connected with one end of the water supply pipeline through the air cooler and the refrigerating unit, and the other end of the water supply pipeline is connected with a water supply connector; the input end of the water pump assembly is connected with one end of the water return pipeline, the other end of the water return pipeline is connected with a water return connector, the water inlet end of the deionization branch is connected to the water supply pipeline, the water outlet end is connected to the water return pipeline, and the pressure stabilizing assembly is connected to the water return pipeline. When the cooling device is used, a closed circulating water path can be formed between the cooling device and the frequency converter, so that cooling water can be recycled, and the utilization rate of the cooling water is effectively improved; by arranging the pressure stabilizing assembly, the pressure stabilizing assembly is used for maintaining the constant pressure and the constant water volume of the water return pipeline so as to buffer the volume change of the cooling water caused by the temperature change.

Description

Technical Field

[0001] The utility model relates to the technical field of pure water cooling, and more specifically, to a pure water cooling system and device. Background Art

[0002] An inverter is a power control device that applies frequency conversion technology and microelectronics technology to control an alternating current motor by changing the working power frequency of the motor. When the inverter works, it generates a large amount of heat, which causes the temperature of the device and the environment to rise, affects the normal operation of the device, increases the failure rate, and shortens the service life. Therefore, a corresponding radiator needs to be set to effectively dissipate the heat of the power devices of the inverter, so as to ensure the normal operation of the inverter. At present, the cooling methods of the radiator in the inverter include natural air cooling, forced air cooling, water cooling, and oil cooling, among which the water cooling has extremely high heat dissipation efficiency.

[0003] During the water cooling process, the radiator needs to continuously supply cold water to dissipate the heat of the inverter. The cold water cools the inverter through the water inlet end of the radiator and is discharged from the water outlet end of the radiator, which cannot realize the recycling of the water source, resulting in a certain waste of water resources and increasing the use cost of the inverter.

[0004] Therefore, a new solution needs to be proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a pure water cooling system and device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A pure water cooling system includes a water pump assembly, a water supply pipeline, a water return pipeline, a refrigeration unit, an air cooler, a deionized branch, and a voltage stabilizing component. The output end of the water pump assembly is connected to one end of the water supply pipeline through the air cooler and the refrigeration unit. The other end of the water supply pipeline is connected with a water supply interface. The input end of the water pump assembly is connected to one end of the water return pipeline. The other end of the water return pipeline is connected with a water return interface. The water inlet end of the deionized branch is connected to the water supply pipeline, and its water outlet end is connected to the water return pipeline. The voltage stabilizing component is connected to the water return pipeline.

[0008] Further, the water pump assembly includes a first water pump and a second water pump arranged in parallel. The output ends of the first water pump and the second water pump are commonly connected to the air cooler. The input ends of the first water pump and the second water pump are commonly connected to one end of the water return pipeline. The first water pump and the second water pump are used alternately.

[0009] Further, the refrigeration unit includes a refrigerator and a plate heat exchanger. The output end of the refrigerator is connected to a first refrigerant pipeline and is connected to one end of the refrigerant flow channel of the plate heat exchanger through the first refrigerant pipeline. The input end of the refrigerator is connected to a second refrigerant pipeline and is connected to the other end of the refrigerant flow channel of the plate heat exchanger through the second refrigerant pipeline. A third refrigerant pipeline is connected in parallel with the refrigerant flow channel of the plate heat exchanger. One end of the third refrigerant pipeline is connected to the first refrigerant pipeline, and the other end of the third refrigerant pipeline is connected to the second refrigerant pipeline. A first electric valve is installed on the first refrigerant pipeline, and a second electric valve is installed on the third refrigerant pipeline. The cooling water flow channel of the plate heat exchanger is connected to a first cooling water pipeline and is connected to a water supply pipeline and an air cooler through the first cooling water pipeline. A second cooling water pipeline is connected in parallel with the first cooling water pipeline.

[0010] Further, the deionized branch includes a flow meter, an ion exchanger, and a precision filter, which are arranged along the water flow direction in the deionized branch.

[0011] Further, a water replenishing branch is connected to the water inlet end of the deionized branch. The water replenishing branch includes a water replenishing tank and a water replenishing pump. The outlet end of the water replenishing tank is connected to the input end of the water replenishing pump through a water replenishing outlet valve. The output end of the water replenishing pump is connected to the water inlet end of the deionized branch through a water replenishing check valve, a pre-filter, and a water replenishing flow valve. The output end of the water replenishing pump is connected to the inlet end of the water replenishing pump through a water replenishing inlet valve.

[0012] Further, the voltage stabilizing component includes a degassing tank and an expansion tank, which are arranged along the water flow direction in the return water pipeline. An electric heater is installed on the degassing tank.

[0013] Further, a pressure gauge, a conductivity meter, a main filter, a first temperature sensor, and a first pressure sensor are installed on the water supply pipeline. A second pressure sensor, a second temperature sensor, and a flow sensor are installed on the return water pipeline.

[0014] The present utility model further provides a pure water cooling device, which includes a frame, a controller, and the above-mentioned pure water cooling system. The controller is installed on the frame and is electrically connected to the pure water cooling system. The pure water cooling system is installed on the frame.

[0015] Further, a cable type water immersion sensor and a third temperature sensor are installed on the frame.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. When the present utility model is in use, a closed circulating water path can be formed with the frequency converter to realize the recycling of cooling water, effectively improving the utilization rate of cooling water.

[0018] 2. In the present utility model, by providing a voltage stabilizing component, the voltage stabilizing component is used to maintain a constant pressure and water volume in the return water pipeline to buffer the volume change of the cooling water caused by temperature change.

[0019] 3. In the present utility model, by allowing a part of the cooling water to flow through the deionization branch, the ions that may precipitate in the pipeline are continuously purified, the conductivity of the cooling water is reduced, and the leakage current is prevented from being generated in a high-voltage environment.

[0020] 4. In the present utility model, the air cooler and the refrigeration unit can work independently or in cooperation according to requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic structural diagram of a pure water cooling system in this embodiment;

[0022] Figure 2 It is a schematic structural diagram of a refrigeration unit in this embodiment;

[0023] Figure 3 It is a schematic structural diagram of a pure water cooling device in this embodiment.

[0024] Reference numerals: water pump assembly 1, first water pump 101, second water pump 102, water supply pipeline 2, return water pipeline 3, refrigeration unit 4, refrigerator 401, plate heat exchanger 402, refrigerant flow channel 403, cooling water flow channel 404, first refrigerant pipeline 405, second refrigerant pipeline 406, third refrigerant pipeline 407, first electric valve 408, second electric valve 409, first cooling water pipeline 410, second cooling water pipeline 411, air cooler 5, deionization branch 6, flowmeter 601, ion exchanger 602, precision filter 603, voltage stabilizing component 7, degassing tank 701, expansion tank 702, electric heater 703, makeup water branch 8, makeup water tank 801, makeup water pump 802, makeup water outlet valve 803, makeup water check valve 804, pre-filter 805, makeup water flow valve 806, makeup water inlet valve 807, liquid level gauge 808, liquid level switch 809, water supply interface 9, return water interface 10, pressure gauge 11, conductivity meter 12, main filter 13, first temperature sensor 14, first pressure sensor 15, second pressure sensor 16, second temperature sensor 17, flow sensor 18, frame 19, controller 20, pure water cooling system 21, touch display screen 22, water immersion sensor 23, third temperature sensor 24, temperature and humidity sensor 25, radiator 26. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Embodiment: A pure water cooling system, as Figure 1 - Figure 2 shown, includes a water pump assembly 1, a water supply pipeline 2, a water return pipeline 3, a refrigeration unit 4, an air cooler 5, a deionized branch 6, and a voltage stabilizing assembly 7. The output end of the water pump assembly 1 is connected to one end of the water supply pipeline 2 through the air cooler 5 and the refrigeration unit 4. The other end of the water supply pipeline 2 is connected with a water supply interface 9. The input end of the water pump assembly 1 is connected to one end of the water return pipeline 3. The other end of the water return pipeline 3 is connected with a water return interface 10. The water inlet end of the deionized branch 6 is connected to the water supply pipeline 2, and the water outlet pipe of the deionized branch 6 is connected to the water return pipeline 3. The voltage stabilizing assembly 7 is connected to the water return pipeline 3, and the voltage stabilizing assembly 7 and the deionized branch 6 are arranged along the water flow direction in the water return pipeline 3.

[0027] During use, the water supply interface 9 and the water return interface 10 are respectively connected to the water inlet end and the water outlet end of the radiator 26 of the frequency converter, so as to form a closed circulating water path among the water pump assembly 1, the air cooler 5, the refrigeration unit 4, the water supply pipeline 2, the radiator 26, the water return pipeline 3, and the voltage stabilizing assembly 7, realizing the recycling of cooling water. Among them, the water pump assembly 1 plays a pumping role, pumping the cooling water into the radiator 26, cooling the frequency converter through heat exchange, and the heated cooling water is transported to the air cooler 5 and the refrigeration unit 4 for cooling, and then transported back to the radiator 26 after cooling, and so on in a cycle.

[0028] Among them, the voltage stabilizing assembly 7 is used to maintain a constant pressure and water volume in the water return pipeline 3 to buffer the volume change of the cooling water due to temperature change.

[0029] The air cooler 5 and the refrigeration unit 4 can work independently or in cooperation according to requirements. For example, when the ambient temperature is lower than 35°C, the air cooler 5 is started to cool the heated cooling water. When the ambient temperature exceeds 35°C and is less than 42°C (this fixed value is adjustable), the refrigeration unit 4 is started to supplement the cooling of the water outlet of the air cooler 5 to meet the requirement of the temperature of 45°C at the inlet of the frequency converter radiator 26. When the ambient temperature is higher than 42°C, the air cooler 5 can stop working, and all the heated cooling water is cooled by the refrigeration unit 4 and then returned to the frequency converter radiator 26 to ensure that the inlet temperature of the frequency converter radiator 26 does not exceed 45°C. The air cooler 5 is an air cooler, configured with a finned heat exchange coil and a fan.

[0030] The deionized branch 6 is connected in parallel to the circulating water path. By allowing a portion of the cooling water in the circulating water path to flow through the deionized branch 6, the ions that may precipitate in the pipeline can be continuously purified, the conductivity of the cooling water can be reduced, and the leakage current can be prevented from being generated in a high-voltage environment.

[0031] Furthermore, the water pump assembly 1 includes a first water pump 101 and a second water pump 102 that are connected in parallel. The output ends of the first water pump 101 and the second water pump 102 are commonly connected to the air cooler 5, and the input ends of the first water pump 101 and the second water pump 102 are commonly connected to one end of the return water pipeline 3. The first water pump 101 and the second water pump 102 are used alternately.

[0032] By setting two water pumps, one for use and one as a standby, with a rotation working mode, they can be automatically switched and manually switched at regular intervals, and the working time is adjustable. The first water pump 101 and the second water pump 102 have the same structure and both adopt stainless steel vertical multistage centrifugal pumps with mechanical seals and overcurrent and overheat protection. Preferably, a shut-off valve (V101, V102, V103, V104) is connected to both the output end and the input end of each water pump for convenient maintenance. Preferably, a check valve (V301, V302) is connected to the output end of each water pump to play a role in preventing backflow at the outlet.

[0033] As Figure 2 shown, the refrigeration unit 4 includes a refrigerating machine 401 and a plate heat exchanger 402. The plate heat exchanger 402 has a refrigerant flow channel 403 and a cooling water flow channel 404. The output end of the refrigerating machine 401 is connected to a first refrigerant pipeline 405 and is connected to one end of the plate-type refrigerant flow channel 403 through the first refrigerant pipeline 405. The input end of the refrigerating machine 401 is connected to a second refrigerant pipeline 406 and is connected to the other end of the refrigerant flow channel 403 of the plate heat exchanger 402 through the second refrigerant pipeline 406. A third refrigerant pipeline 407 is connected in parallel to the refrigerant flow channel 403 of the plate heat exchanger 402. One end of the third refrigerant pipeline 407 is connected to the first refrigerant pipeline 405, and the other end of the third refrigerant pipeline 407 is connected to the second refrigerant pipeline 406. A first electric valve 408 is installed on the first refrigerant pipeline 405, and a second electric valve 409 is installed on the third refrigerant pipeline 407. The cooling water flow channel 404 of the plate heat exchanger 402 is connected to a first cooling water pipeline 410 and is connected to the water supply pipeline 2 and the air cooler 5 through the first cooling water pipeline 410, that is, both ends of the first cooling water pipeline 410 are respectively connected to one end of the water supply pipeline 2 and the output end of the air cooler 5. A second cooling water pipeline 411 is connected in parallel to the first cooling water pipeline 410.

[0034] During use, the refrigerating machine 401 delivers the refrigerant into the refrigerant flow channel 403 of the plate heat exchanger 402, cools down the heated cooling water in the cooling water flow channel 404 through heat exchange. The heated refrigerant flows back to the refrigerating machine 401 for cooling, and after cooling, it is delivered back into the refrigerant flow channel 403 of the plate heat exchanger 402, and circulates in this way repeatedly. Among them, the refrigerating machine 401 is an air-cooled refrigerating machine, and the first electric valve 408 and the second electric valve 409 are electric proportional valves, which are used to adjust the refrigerant flow rate flowing into the plate heat exchanger 402.

[0035] Preferably, shut-off valves are connected to the four ports of the plate heat exchanger 402 and the second cooling water pipeline 411, which is convenient for maintenance.

[0036] Furthermore, the deionized branch 6 includes a flow meter 601, an ion exchanger 602 and a precision filter 603. The flow meter 601, the ion exchanger 602 and the precision filter 603 are arranged along the water flow direction in the deionized branch 6. By setting the deionized branch 6, the ions in the cooling water are continuously removed to achieve the purpose of maintaining an extremely low conductivity for a long time. Among them, the flow meter 601 is LZM4-36LPM, which is used to monitor the flow rate of the deionized branch 6; there are two ion exchangers 602, which are used for water quality stabilization, and non-regenerative resin is selected as the raw material. At the same time, an exhaust valve (V313) for exhausting gas and resin discharge valves (V231, V232) for discharging waste resin are installed on the ion exchanger 602, and the exhaust valve is equipped with a check valve; the precision filter 603 is SY-10, 10μm, which is used to intercept the resin particles that may break out and flow out.

[0037] Preferably, shut-off valves (V202, V203, V204, V205) are connected to both the input end and the output end of the ion exchanger 602, which is convenient for maintenance.

[0038] Preferably, a check valve (V303) is installed at the water inlet end of the deionized branch 6 to play a check role.

[0039] Furthermore, a makeup water branch 8 is connected to the water inlet end of the deionized branch 6. The makeup water branch 8 includes a makeup water tank 801 and a makeup water pump 802. The outlet end of the makeup water tank 801 is connected to the input end of the makeup water pump 802 through a makeup water outlet valve 803. The output end of the makeup water pump 802 outputs two paths. One path is connected to the water inlet end of the deionized branch 6 through a makeup water check valve 804, a pre-filter 805 and a makeup water flow valve 806, and the other path is connected to the inlet end of the makeup water pump 802 through a makeup water inlet valve 807. With the above design of the makeup water pump 802, makeup water can be supplied to the system by the makeup water pump 802 and makeup water can be supplied to the makeup water tank 801 by the makeup water pump 802.

[0040] The capacity of the water replenishing tank 801 is 28L. The water replenishing tank 801 is equipped with a visible liquid level gauge 808 and a liquid level switch 809. For example, when the liquid level in the water replenishing tank 801 is lower than 100mm, it can prompt the operator to replenish water into the water replenishing tank 801 to keep the replenished water in the water replenishing tank 801 full. When a low liquid level alarm occurs in the water replenishing tank 801, the water replenishing pump 802 cannot be started. When the system is operating in the automatic mode, the water replenishing operation is carried out automatically. When the return water pipeline 3 of the system is lower than the set pressure, the system sends out a water replenishing signal, and the water replenishing pump 802 starts automatically to replenish water to the system. When the system pressure reaches the preset value, the water replenishing pump 802 automatically stops replenishing water.

[0041] Preferably, the water replenishing tank 801 is equipped with an exhaust valve (V215) for exhausting gas.

[0042] Preferably, the other end of the return water pipeline 3 is connected with a solenoid valve (VC01) and is connected to the water replenishing tank 801 through the solenoid valve; by opening and closing the solenoid valve, it is convenient to relieve the pressure of the return water pipeline 3.

[0043] Furthermore, the voltage stabilizing assembly 7 includes a deaeration tank 701 and an expansion tank 702. The deaeration tank 701 and the expansion tank 702 are arranged along the water flow direction in the return water pipeline 3. When the frequency converter works, it will generate a certain electric field. When the cooling water flows to the radiator 26, part of the cooling water is ionized, so the return water volume of the cooling water is reduced; by setting the deaeration tank 701, it is used to remove the gas in the returned cooling water and play a role in gas-water separation; by setting the expansion tank 702, it is used to supplement the cooling water to the return water pipeline 3 and stabilize the voltage.

[0044] Preferably, an electric heater 703 is installed on the deaeration tank 701. The electric heater 703 is used to compensate the temperature of the cooling water when the supply water temperature is close to the dew condensation temperature to prevent dew condensation. The electric heater 703 has a minimum water temperature control function. When the water temperature drops to the set temperature, the electric heater 703 starts automatically to maintain the water temperature.

[0045] The expansion tank 702 is internally equipped with an EPDM material airbag, and nitrogen with a certain pressure is filled between the airbag and the tank body. By setting the expansion tank 702, on the one hand, it is to ensure that the entire water system always has enough circulating water volume during temperature changes, water consumption, and slight leakage. During normal circulation, the cooling water enters the internal airbag of the expansion tank 702, compressing the nitrogen in the tank. When the water in the system is lost, the nitrogen expands to make up for the water; on the other hand, it maintains a constant pressure in the return water pipeline 3. When the volume of the cooling water in the return water pipeline 3 changes, the nitrogen automatically expands or contracts to keep the cooling water at a constant pressure.

[0046] Preferably, the expansion tank 702 is connected with shut-off valves (V216, V2217) for convenient maintenance.

[0047] Further, a pressure gauge 11, a conductivity meter 12, a main filter 13, a first temperature sensor 14, and a first pressure sensor 15 are installed on the water supply pipeline 2. Among them, the pressure gauge 11 is used to display the water pressure locally; the conductivity meter 12 is used to detect the conductivity of the cooling water; the main filter 13 is GLY-50, 200μm, and is used to prevent rigid particles that may be washed off during the rapid flow of the cooling water from entering the valve body; the first temperature sensor 14 is used to detect the water temperature of the cooling water in the water supply pipeline 2; the first pressure sensor 15 is used to detect the water pressure of the cooling water in the water supply pipeline 2; at the same time, the conductivity meter 12, the first temperature sensor 14, and the first pressure sensor 15 are electrically connected to the controller 20, and the detected data can be transmitted to the controller 20 for remote monitoring.

[0048] A second pressure sensor 16, a second temperature sensor 17, and a flow sensor 18 are installed on the water return pipeline 3. The second pressure sensor 16 is used to detect the water pressure of the cooling water in the water return pipeline 3; the second temperature sensor 17 is used to detect the water temperature of the cooling water in the water return pipeline 3; the flow sensor 18 is used to detect the flow rate of the cooling water in the water return pipeline 3; at the same time, the second pressure sensor 16, the second temperature sensor 17, and the flow sensor 18 are electrically connected to the controller 20, and the detected data can be transmitted to the controller 20 for remote monitoring.

[0049] This embodiment also provides a pure water cooling device, as Figure 3 shown, including a frame 19, a controller 20, and the above-mentioned pure water cooling system 21. The controller 20 is installed on the frame 19 and is electrically connected to the pure water cooling system 21. The pure water cooling system 21 is installed on the frame 19. The controller 20 is also electrically connected to a touch display screen 22, and the touch display screen 22 is installed on the frame 19.

[0050] Further, a cable-type water immersion sensor 23 and a third temperature sensor 24 are installed on the frame 19; among them, the water immersion sensor 23 is used for liquid leakage detection; the third temperature sensor 24 is used for detecting the device temperature.

[0051] Further, the above-mentioned device is also equipped with a temperature and humidity sensor 25. The temperature and humidity sensor 25 is installed in the cabinet of the frequency converter. When the cooling water temperature is close to the dew point temperature of the valve hall and there is a risk of condensation on the pipeline and device surfaces, the electric heater 703 automatically starts to work and stops until the cooling water temperature is higher than the dew point temperature.

[0052] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A pure water cooling system, characterized in that: The invention comprises a water pump assembly (1), a water supply pipeline (2), a water return pipeline (3), a refrigeration unit (4), an air cooler (5), a deionization branch (6), and a voltage stabilizing assembly (7); the output end of the water pump assembly (1) is connected to one end of the water supply pipeline (2) via the air cooler (5) and the refrigeration unit (4); the other end of the water supply pipeline (2) is connected to a water supply interface (9); the input end of the water pump assembly (1) is connected to one end of the water return pipeline (3); the other end of the water return pipeline (3) is connected to a water return interface (10); the water inlet end of the deionization branch (6) is connected to the water supply pipeline (2); the water outlet end thereof is connected to the water return pipeline (3); and the voltage stabilizing assembly (7) is connected to the water return pipeline (3).

2. A pure water cooling system according to claim 1, characterized in that: The water pump assembly (1) comprises a first water pump (101) and a second water pump (102) which are arranged in parallel, wherein the output ends of the first water pump (101) and the second water pump (102) are commonly connected to an air cooler (5), and the input ends of the first water pump (101) and the second water pump (102) are commonly connected to one end of a return water pipeline (3), and the first water pump (101) and the second water pump (102) are used in rotation.

3. A pure water cooling system according to claim 1, characterized in that: The refrigeration unit (4) comprises a refrigerator (401) and a plate heat exchanger (402); the output end of the refrigerator (401) is connected to a first refrigerant pipeline (405), and is connected to one end of a refrigerant flow channel (403) of the plate heat exchanger (402) through the first refrigerant pipeline (405); the input end of the refrigerator (401) is connected to a second refrigerant pipeline (406), and is connected to the other end of the refrigerant flow channel (403) of the plate heat exchanger (402) through the second refrigerant pipeline (406); the refrigerant flow channel (403) of the plate heat exchanger (402) is connected in parallel with a third refrigerant pipeline (407); the third refrigerant pipeline (407) One end of the third refrigerant pipeline (407) is connected to the first refrigerant pipeline (405), and the other end of the third refrigerant pipeline (407) is connected to the second refrigerant pipeline (406). The first refrigerant pipeline (405) is equipped with a first electric valve (408), and the third refrigerant pipeline (407) is equipped with a second electric valve (409). The cooling water flow channel (404) of the plate heat exchanger (402) is connected to the first cooling water pipeline (410), and is connected to the water supply pipeline (2) and the air cooler (5) through the first cooling water pipeline (410). The first cooling water pipeline (410) is connected in parallel with the second cooling water pipeline (411).

4. A pure water cooling system according to claim 1, characterized in that: The deionization branch (6) comprises a flow meter (601), an ion exchanger (602) and a precision filter (603), and the flow meter (601), the ion exchanger (602) and the precision filter (603) are arranged along the water flow direction in the deionization branch (6).

5. A pure water cooling system according to claim 1, characterized in that: The water inlet end of the deionization branch (6) is connected to a water replenishment branch (8), and the water replenishment branch (8) comprises a water replenishment tank (801) and a water replenishment pump (802). The outlet end of the water replenishment tank (801) is connected to the input end of the water replenishment pump (802) via a water replenishment outlet valve (803), the output end of the water replenishment pump (802) is connected to the water inlet end of the deionization branch (6) via a water replenishment check valve (804), a pre-filter (805), and a water replenishment flow valve (806), and the output end of the water replenishment pump (802) is connected to the inlet end of the water replenishment pump (802) via a water replenishment inlet valve (807).

6. A pure water cooling system according to claim 1, characterized in that: The voltage stabilizing component (7) comprises a degassing tank (701) and an expansion tank (702), wherein the degassing tank (701) and the expansion tank (702) are arranged along the water flow direction in the return water pipeline (3), and an electric heater (703) is installed on the degassing tank (701).

7. A pure water cooling system according to claim 1, characterized in that: The water supply pipeline (2) is installed with a pressure gauge (11), a conductivity meter (12), a main filter (13), a first temperature sensor (14) and a first pressure sensor (15), and the return water pipeline (3) is installed with a second pressure sensor (16), a second temperature sensor (17) and a flow sensor (18).

8. A pure water cooling device, characterized in that: It comprises a rack (19), a controller (20) and a pure water cooling system (21) as described in any one of claims 1 to 7, wherein the controller (20) is mounted on the rack (19) and electrically connected to the pure water cooling system (21), and the pure water cooling system (21) is mounted on the rack (19).

9. A pure water cooling device according to claim 8, characterized in that: A cable-type water immersion sensor (23) and a third temperature sensor (24) are installed on the frame (19).

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